How to Cut Clean Cable Channels with Less Dust and Better Results

When you’re running electrical cable (and sometimes small plumbing lines) inside a finished space, the cleanest solution is to cut a channel (groove) in the wall and embed the line so it won’t interfere with the interior finish.

This process is commonly called:

• wall chasing
• slot cutting
• groove cutting

The biggest challenge with chasing is dust. Cutting masonry and concrete creates heavy airborne dust, which is why professional crews usually use dust extraction and tools designed specifically for this job.

In this guide, we’ll break down the tools you can use, how they compare, and how to choose the right blade and dust-control setup.

Tools Used for Wall Chasing

Three tool types are commonly used:

1. Angle grinder (cut + chip out the center)
2. Hammer drill (chip out material only)
3. Wall chaser (two-blade chaser with dust extraction)

Each has a place depending on the material, workload, and finish requirements.

Option 1: Angle Grinder (Most Versatile, Most Dust Without Extraction)

Why contractors use it

An angle grinder is widely available and can do more than chasing—cutting, trimming, grinding, etc. It’s a high-value, multi-purpose tool.

Downsides

Chasing with an angle grinder takes time because you must:

• make two parallel cuts
• then chip out the center with a hammer drill and chisel

Other common drawbacks:

• Hard to keep two cuts perfectly straight and parallel freehand—especially on long runs
• High dust output unless you use a shroud + vacuum
• More time overall compared to a true wall chaser

Best for: occasional chasing, small jobs, and crews who already own a grinder and want an affordable setup.

Option 2: Hammer Drill (Least Dust, Roughest Result)

Why contractors use it

A hammer drill (rotary hammer) breaks the wall into chunks, so it produces less airborne cutting dust than a grinder.

Downsides

• Works best only in soft/abrasive materials
• The groove is typically rough and uneven
• It’s usually slow for neat, consistent channels

Best for: small patches, soft material (block/brick), or when a “perfect” groove isn’t required.

Option 3: Wall Chaser (Fastest + Cleanest for Large Volumes)

 

A wall chaser is purpose-built for chasing and is the best tool when you’re doing a lot of channels.

Major benefits

• Runs two blades at once → fast, consistent grooves
• Built-in dust extraction port
• Produces straight, parallel cuts with repeatability
• Cleaner work in occupied or finished spaces

Tradeoff

• More expensive and specialized
• Best ROI comes from frequent use

Best for: electricians, installers, and contractors cutting grooves regularly.

Choosing an Angle Grinder for Groove Cutting

For chasing, corded grinders are usually the best choice because they deliver:

• higher sustained power
• stable RPM
• no downtime from battery swaps

Most angle grinders are designed around a similar surface speed, but for chasing you’ll want more power to keep RPM stable under load.

Common grinder sizes (U.S. format)

5 in. (125 mm)

• Most popular size
• Typical cutting depth: about 1.2–1.4 in. (30–35 mm)
• Common power range: ~1.0–1.6 kW (with heavier pro models up to ~1.7 kW)
• Typical speed: 10,000–12,250 RPM

6 in. (150 mm)

• Cutting depth: up to ~1.8 in. (45 mm)
• Speed typically up to ~10,000 RPM

7 in. (180 mm)

• Less common
• Cutting depth: up to ~2.2 in. (55 mm)
• Often up to ~8,500 RPM

9 in. (230 mm)

• Second most common after 5 in.
• Cutting depth: up to ~2.6 in. (65 mm)
• Often 6,500 RPM range
• High power options available (often 2.0–2.8 kW+)

Choosing a Wall Chaser

When selecting a wall chaser, focus on:

• power
• max groove depth
• max groove width
• blade diameter
• RPM
• dust extraction design/compatibility

Because wall chasers run two blades, power and RPM stability matter more than most people think.

Wall chaser power categories

Light duty (about 0.8–1.3 kW)

• For small jobs
• Can overheat during extended cutting
• Often uses 125–150 mm blades
• Higher RPM designs (often up to ~10,000)

Mid-range (about 1.3–2.0 kW)

• Good for longer cuts and regular use
• Often uses 150–180 mm blades (sometimes 125 mm)
• RPM commonly 4,500–10,000 depending on blade size

Heavy duty (about 2.0–3.0 kW)

• Built for long continuous cutting
• Often 180–230 mm blades
• RPM often 4,500–6,600

Why RPM matters on wall chasers

Wall chasers can be broadly grouped into:

• up to ~6,500 RPM
• over ~6,500 RPM

At lower RPM, blades can experience more heat buildup, which may increase thermal wear—so blade selection becomes more important.

Groove Depth and Safety Considerations

Most commonly used grinders and wall chasers run 5 in. (125 mm) blades because:

• groove depth is typically around 1.2 in. (30 mm), which is enough for most cable runs
• it’s easier to control
• it fits many common dust extraction systems

Some wall chasers are designed to reach about 1.6 in. (40 mm).

Important safety note: Deep grooves in load-bearing walls can reduce structural integrity. Many standards limit how deep chasing can go, which is one reason typical chasing depth is kept relatively shallow.

Material Matters: Hardness, Abrasiveness, and Rebar

Groove cutting performance depends heavily on the wall material—and the blade.

Two factors drive both cutting speed and blade life:

• Hardness (how difficult it is to cut)
• Abrasiveness (how quickly the material wears the blade)

Abrasive materials can cut quickly but wear blades faster. Hard, low-abrasive materials can “glaze” a blade and slow cutting unless you’re using the right segment design.

You may also hit metal (rebar, mesh, or embedded steel), which changes cutting behavior and increases load.

Turbo vs. Segmented Blades for Chasing

During chasing, the blade is inside a closed shroud and is under constant load. Heat builds quickly, and the steel core expands.

Because of that, segmented blades are typically recommended for chasing:

• better airflow and cooling
• less thermal stress in the cutting edge
• lower risk of damage under sustained heat

In contrast, turbo styles with a more continuous rim can retain heat more easily in this specific enclosed, high-load use case.

Common Blade Choices for Groove Cutting

Below are three commonly used blade options for chasing work (for grinders and wall chasers), depending on material conditions and job volume.

Baumesser Rapid Pro

• Available sizes: 125 mm and 230 mm
• Good for: materials with medium to high abrasiveness
• Not recommended for: very hard or heavily reinforced concrete
• Best use: small volumes where you want fast cutting without premium cost
• Design: aggressive cutting profile for good speed

Distar Technic Advanced

• Available sizes: 115, 125, 150, 180, 232 mm
• A common “go-to” for wall chasing because it covers most tool sizes
• Performs well across different power classes
• Handles rebar better than general-purpose options

Distar Meteor

• Available sizes: 125 mm and 230 mm
• Best for: very hard, highly reinforced concrete
• Best use: large volumes
• Strength: significantly higher blade life than general-purpose options

Dust Extraction for Chasing with an Angle Grinder

Wall chasers usually include a dust port and shroud, but many crews still chase with grinders because the upfront cost is lower.

If you’re working in:

• occupied homes
• finished offices
• remodels where dust control matters

…a grinder should be paired with a dust extraction shroud and a vacuum.

Mechanic dust-control attachments (for angle grinders)

AirDUSTER 115–125 / 230

• budget-friendly dust shroud
• dust extraction only
• still requires two cuts
• dust capture efficiency can exceed 95% with a proper vacuum

AirChaser 230

• designed for 230 mm grinders
• includes a wheel system to help keep the blade square to the surface
• includes depth adjustment

AirChaser 115–125

• designed for 115/125 mm grinders
• wheels for smoother travel
• depth adjustment
• includes hardware that allows mounting two blades on the grinder spindle to mimic a wall chaser
• spacing washers allow groove width adjustment

Bottom line: with the right shroud and setup, a standard angle grinder can function similarly to a wall chaser at a lower entry cost.

Conclusion

For wall chasing, the right setup depends on your workload and jobsite conditions:

• Small jobs / occasional use: angle grinder + dust shroud + vacuum
• Soft materials / rough chasing: hammer drill can work, but results are less clean
• High volume / professional installs: a wall chaser is faster, cleaner, and more consistent

No matter the tool, strong results come down to:

• enough power
• stable RPM
• the right segmented blade for the material
• proper dust extraction for indoor or finished work

It’s smart to keep multiple blade options available. Materials vary widely from job to job, and a blade that flies through block may struggle on hard reinforced concrete.